Hydrogen filling system and hydrogen filling method

Abstract

To provide a hydrogen filling system and a hydrogen filling method capable of preventing hydrogen from being filled at high filling rate in the same manner as the communication filling despite a condition that pressure, temperature and so on in the in-vehicle tank are not precisely grasped. The hydrogen filling system (100) of the present invention includes a control unit (CU1, CU2, CU3) for controlling hydrogen filling, wherein the control unit has a function of judging whether or not there is an abnormality in pressure or temperature data in an in-vehicle tank (IT) at communication filling and a function of stopping the communication filling and converting to non-communication filling when there is an abnormality in the pressure or the temperature data.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]The present application claims priority to Japanese Application No. 2019-004878 filed on Jan. 16, 2019, the disclosure of which is incorporated herein by reference.STATEMENT RE: FEDERALLY SPONSORED RESEARCH / DEVELOPMENT[0002]Not ApplicableBACKGROUND1. Technical Field of the Invention[0003]The present invention relates to a technique for filling hydrogen to hydrogen vehicles (FCVs) and so on.2. Description of the Related Art[0004]In recent years, accompanied by development and spread of vehicles mounting fuel cell (fuel cell vehicles, FCVs), it has been placed high importance to increase installation places of hydrogen station as hydrogen supply facility (refer to Patent document 1, for example). In the hydrogen station is mounted a hydrogen filling device (dispenser), which fills hydrogen to an in-vehicle tank of a vehicle arriving at the hydrogen station under the condition that pressure and temperature of the tank are maintained in prede...

AI Technical Summary

Benefits of technology

[0015]With the present invention having the above construction, in communication filling, when there is an abnormality in measurement value of pressure or temperature in an in-vehicle tank (IT), communication filling is converted to non-communication filling. When there is an abnormality in measurement value of pressure or temperature in an in-vehicle tank (IT), it can be judged to be a state where pressure or temperature in an in-vehicle tank cannot be transmitted accurately on a hydrogen filling device side. Then, in case of non-communication filling, filling rate is set to be lower than that of communication filling, so that converting to the non-communication filling allows hydrogen filling to be performed at low filling rate, that is, on the safe side, which prevents hydrogen being filled up to the limit of the in-vehicle tank (IT), that is, full tank. In other words, when there is a fear that pressure or temperature in an in-vehicle tank (IT) is not accurately transmitted on the hydrogen filling device (1) side in communication filling, it is converted to non-communication filling, which is more space to spare on the in-vehicle tank (IT) side, that is, to a safety side, in such a case, hydrogen filling can be carried out in safety.

Problems solved by technology

In such cases, continuing communication filling may cause an inconvenience that hydrogen is filled at high filling rate in the same manner as the communication filling despite a condition that pressure, temperature and so on in the in-vehicle tank are not precisely grasped.

But, no technique for dealing with the above inconvenience has not yet been proposed.

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